1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
11

How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for

Chemistry
1 answer:
Vanyuwa [196]3 years ago
4 0

Answer: 123 g

Explanation: Q =It = nzF. For Ca^2+ z= 2, t = 5.5 x 3600 s and I = 30.0

And F= 96485 As/mol

Amount of moles is n = It /zF = 3.078 mol , multiply with atomic mass 40.08 g/mol

You might be interested in
Miguel’s family drove 357 miles on their weekend trip. Their car’s average gas mileage was 25.5 miles per gallon. How many gallo
ad-work [718]

Answer:

14 gallons

Explanation:

357 divided by 14 = 25.5 and if you check your answer 14 x 25.5 = 357 (i hope this is right)

6 0
3 years ago
Read 2 more answers
A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2, 24
Setler79 [48]

<u>Answer:</u>

<u>For Part A:</u> The partial pressure of Helium is 218 mmHg.

<u>For Part B:</u> The mass of helium gas is 0.504 g.

<u>Explanation:</u>

  • <u>For Part A:</u>

We are given:

p_{CO_2}=245mmHg\\p_Ar}=119mmHg\\p_{O_2}=163mmHg\\P=745mmHg

To calculate the partial pressure of helium, we use the formula:

P=p_{CO_2}+p_{Ar}+p_{O_2}+p_{He}

Putting values in above equation, we get:

745=245+119+163+p_{He}\\p_{He}=218mmHg

Hence, the partial pressure of Helium is 218 mmHg.

  • <u>For Part B:</u>

To calculate the mass of helium gas, we use the equation given by ideal gas:

PV = nRT

or,

PV=\frac{m}{M}RT

where,

P = Pressure of helium gas = 218 mmHg

V = Volume of the helium gas = 10.2 L

m = Mass of helium gas = ? g

M = Molar mass of helium gas = 4 g/mol

R = Gas constant = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

T = Temperature of helium gas = 283 K

Putting values in above equation, we get:

218mmHg\times 10.2L=\frac{m}{4g/mol}\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 283K\\\\m=0.504g

Hence, the mass of helium gas is 0.504 g.

6 0
3 years ago
How are protons, electrons, and neutrons correctly compared​
Fiesta28 [93]

they all have one thing in common and that its all made up of atoms. When these components are active it creates energy  

4 0
3 years ago
Photo attached, please help me if you can :(
mylen [45]

Answer:

I'm pretty sure the ionic structure is C, sorry this is only one answer tho : , (

Explanation:

7 0
3 years ago
Which compound contains ionic bonds? <br> 1) N2O<br> 2) Na2O<br> 3) CO<br> 4) CO2
lakkis [162]

Answer:

The ionic bond present between CaO molecule

Explanation:

7 0
2 years ago
Other questions:
  • In an experiment, an unknown gas effuses at one-half the speed of oxygen gas, which has a molar mass of 32 g/mol. which might be
    5·1 answer
  • According to the National Institute of Health, ventricular tachycardia is a fast, regular beating of the ventricles that may las
    11·1 answer
  • How many liters of 1.88 M solution can be made with 29.5 grams of lithium fluoride?
    14·1 answer
  • What is the scientific name of lion
    8·2 answers
  • Convert the speed of light, 3.0 x 10^8 m/s, into mi/hr. (1610 m = 1 mi). Could you please explain step by step thank you!
    5·1 answer
  • Someone pleaseeeeee helppp
    14·1 answer
  • The same side of the moon faces earth at all times. true or false
    7·2 answers
  • A reaction of 100mL of 1.35 M HCl and 100mL of 1.76 M NaOH is monitored and the following
    13·1 answer
  • The forces between ________ are examples of electric forces.
    11·2 answers
  • In your opinion, will all the objects in the Universe last forever? Justify your answer.​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!